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Windows 7: HP Pavilion DV6-1120sa Random Shutdown

15 Apr 2011   #1

windows 7 Home Premium 64 Bit
HP Pavilion DV6-1120sa Random Shutdown

Hi guys,

I think I have posted my problem in the wrong place:

the problem I have with my laptop started a few days ago when Sophos Endpoint discovered a trojan memory virus; it neither gave option to remove/quarantine or seek advice, just simply told me the virus was there.
Then I got two Blue Screens of Death in the space of ten-fifteen minutes that worried me enough that I decided to reinstall Windows 7 (last reinstall was Christmas 2009, Vista had been preinstalled from purchase in August 2009, Windows 7 installed November after release), only when the reinstall had finished it wasn't long before everything would freeze/lockup and only shutting down with the power button would work in getting out of the lockup/freeze.
Up until yesterday, the freeze would happen 10-15 even 20 times and when I tried to get into the BIOS the laptop would freeze and shutdown too.

Now, I can run a Check Disk in Windows and from BIOS (when leaving the laptop alone for a few hours for BIOS access), both methods came back saying the HDD was OK and I have tried testing the HDD in a friend's compatible Compaq Presario where the freeze does not occur.
Testing Memory (1gb and 2gb sticks) in my HP results in a freeze and/or shutdown whereas testing the Memory in my friend's Compaq runs to the end and comes back OK.
Testing his HDD and Memory in my HP results in a freeze/shutdown in Windows and in BIOS.

I have removed CMOS and replaced it several hours later to get the Default Values option which I selected and has not made any difference at all.

The fan works perfectly fine and freezes/shutdowns happen whether the laptop is warm or cool. I have noticed that if I leave the laptop alone during the freeze, it does not "snap out" of it and, in fact, the fan makes a lot more noise and gets hotter whether the activity light is flashing or not.

The link above has a lot more detail in what I have tried but right now I feel I have eliminated what can be replaced like the HDD and Memory and neither me or my friend (who is tech-savy) can think of what to do now to fix the laptop.

I can't afford a new laptop (like most people), I have a week before I have to go back to Uni for exams and a summer of essays so this really has happened at the wrong time, I dare not even write this on my laptop in case it freezes/locks up while I'm doing so because it is that random!


As of today I just cannot get into the BIOS at all without a sudden shut down of the laptop, if I leave it to POST and log in to Windows normally, there is no shut down, but it does eventually freeze and shut down at any given moment whether left idle, using IE, it doesn't seem to matter what I'm doing.
I have tried booting using Ubuntu USB in order to see if It lets me do that, but it simply hangs at POST for 20-30 seconds and shuts down. I can't even use my Windows 7 disc to open a Command Prompt to try and use Disk Part to clean all of the drive in case there is a virus still lurking somewhere.
Did a system restore and my customized logon screen from the previous Windows 7 installation returned. The restore point was just after I reinstalled Windows 7. Sophos was turned off so trying to start the service resulted in a black screen with a flickering blue line across the top of the screen which remained until I eventually shut down with the power button.

Update 2

Since yesterday, the laptop no longer boots at all, when switching the laptop on, the lights come on for a few seconds, the fan kicks in and before the BIOS/Boot options appear, the laptop shuts down instantly so I'm looking for a new laptop as of today.

My System SpecsSystem Spec


 HP Pavilion DV6-1120sa Random Shutdown

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